Re: [APML] STV Questions

[banburys@sonic.net]

Hi Shekhar--perhaps we could get together some evening, and you could try my 
STV. I use a 135 mm f2.8 Nikon lens because it is cheaper and faster than the 
e-finder sold by SBIG.

Am in Santa Fe, NM for a few days, but we can work something out when I get 
back.

Steve

Shekhar Borde <shekhar@prodigy.net> said:

> Herm.
> 
> > What's going on with your St4-guidescope?, I have no problems guiding for 
hours
> > with my R200SS.. I would imagine a 3 hour shot would require a good drift
> > alignment.
> 
> The ST-4 and guidescope are fine but I cannot go over 60 minutes 
> with that combination.  I agree that good drift alignment is an absolute
> must but I am still worried about flexure. The last time I tried a 90 
minute 
> shot, I got smeared stars due to flexure.    
> 
> > 
> > I cant see any way the E-finder could flex if you secure the cable and 
use a
> > Losmandy dovetail camera mount.. very stout camera mounts.
> > 
> 
> I have the Losmandy camera mount and that is what would use along
> with an additional support point if necessary.  But I am trying to assess
> if I should even venture down this path.
> 
> I am sure that, as Jim says, the STV+efinder combination is less prone
> to flexure.  What's not certain is how much less.
> 
> Shekhar  
> 
> 
> 
> 
> --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
>              Unsubscribe at <majordomo@seds.org>
> 



-- 




--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>